Dwitter - javascript demos in 140 characters

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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pythech

function u(t) {

c.width|=0
with(x)for(i=3;i--;stroke())beginPath(lineWidth=r=200*C(t/2+3.14)+300),arc(650+250*i,700-i%2*434,r/2,z=i*2.095,5.235+z)

Jun 17 2018 8:43 PM UTC

}// 130/140

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Imaginary Triangle

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Protowalker

function u(t) {

c.width=500
for(i=0;i<10;i++){z=T(t*2+i/10);x.fillRect(250+(i%2?1:-1)*z*50,140+z*i*3,z*=10,z)}

Jun 15 2018 6:33 AM UTC

}// 94/140

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My first dweet! little 3D thingadoo in 94 characters.

u/lionleaf

Welcome! That's a great one! #first_dweet

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jylikangas

function u(t) {

for(c.width=z=-4;z++;x.fill(new Path2D("M"+[i=d>30?d-30:1,j=i-1?30:d,i,-j,d,-d,d,d])))d=35/(2-t--%2),x.setTransform(z%3?-1:1,0,0,1,150,75)

Jun 14 2018 7:29 AM UTC

}// 138/140

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Endless double doors...

u/pythech

#path2d
u/zanella

*insert music theme for Get Smart here*
u/zanella

*insert music theme for Get Smart here*
u/zanella

(insert music theme for Get Smart here)
u/zanella

Sorry about the multiple comments, it wasn't posting when I clicked the button. :)

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leSchieber

function u(t) {

s=5;l=250;w=c.width=1920;h=c.height-l;r=1000;for(i=w/s;i--;){v=(t+i/w*s*r)%r;x.fillRect(w/r*v,(h/r*v+S(v*2*Math.PI)*100),s,300)}

Jun 16 2018 4:26 PM UTC

}// 128/140

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firegodjr

function u(t) {

F=a=>((p=1.62)**a-(-p)**-a)/2.2
with(x)for(c.width|=D=10,x.m=translate,m(8e2,9);D--;)arc(0,0,F(D+2)*9,0,p),m(0,F(D)*9),rotate(1.57),stroke()

Jun 16 2018 3:33 AM UTC

}// 140/140

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The first #fibonacci spiral to ever grace Dwitter! :D

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veubeke

remix of d/8632 by u/veubeke

function u(t) {

r=Math.random
t&&(S-=5)>3?0:_=r(X=r(Y=r(S=60,H=r()*2+1|0)*19|0)*33|0)<.5
x.fillStyle=`hsla(${t},60%,${S}%`
x.fillRect(X*60-S,Y*60-S,S*H,S*H)

Jun 18 2018 10:31 AM UTC

}// 140/140

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BirdsTweetCodersDweet

remix of d/8621 by u/Bugsy

function u(t) {

//for(c.width|=r=999;--r;x.lineTo(960+C(r+t)*a,540+S(r+t)*a))a=r/2,x.fillStyle=`hsl(${r*90},50%,50%)`,x.fill("evenodd")

Jun 17 2018 9:21 AM UTC

}// 119/140

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Uncomment to unleash this beautiful CPU killer :P (on my phone at least)

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robbyg

remix of d/8582 by u/robbyg

function u(t) {

t&&x.drawImage(c,0,3)
for(Z=i=360;i--;x.fillRect(i*18-C(t+t-S(i/9))*Z-Z,0,Z,3))x.fillStyle=`hsl(${(S(i/3+t)+9)*4},${z=25+i%55}%,${z*.8}%)`

Jun 13 2018 1:29 PM UTC

}// 138/140

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Dunes.

u/magna

I bet p01 will come and add a camel to this.
u/lionleaf

Wow, that's really nice! #dunes #sand #desert
u/zanella

But the function names are already in camel case. #rimshot
u/joeytwiddle

#landscape

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magna

remix of d/8593 by u/magna

function u(t) {

c.width|=0
x.font='66px"'
for(Y=16;Y--;)for(X=29;X--;)x.fillText([...'🌑🌘🌗🌖🌕🌔🌓🌒🌑'][(S(X/7/S(t)+Y/5/C(t)+t)+1)*4.5|0],X*66,Y*66+66)

Jun 13 2018 1:28 PM UTC

}// 129/140

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u/vain

fantastic!
u/jdspugh

Very creative!

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Xen

function u(t) {

for(c.width|=i=150;i--;)x.stroke(),x.beginPath(),
x.arc(860+200*S(t+i/2),S(9*i),t*i/2,0,7)

Jun 17 2018 9:52 PM UTC

}// 90/140

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